Book-holding attachment



A. L; R'ADLEIN AND 0. (a. NELSON.

BOOK HOLDING ATTACHMENT.

.APPLICATIVON FILED DEC I2, 1921.

INVENTETRE 4L/7401E/A/8I C/ZJQA/ Patented Oct. 117

, ATTORNEY l atented @ct. l?, 1922.

ALBERT L. RADLEIN AND CARL G. NELSON, OF CHICAGO, ILLINOIS; SAID RADLEIN, ASSIGNOR TO SAID NELSON.

BOOK-HOLDING- ATTACHMENT;

Application filed December 12, 1921. Serial No. 521,689.

To all whom it may concern Be it known that we, ALBERT L. RADLEIN, and CARL G. NELSON, citizens of the United States of America and residents of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Book-Holding Attachments, of which the following is a specification.

This invention relates to that class of book holding attachment in which a base adapted for attachment to a book is provided with resilient fingers adapted to engage the leaves of the book and hold the same in an open condition for ready reference, and the pres ent improvement has for its objects To provide a simple and efficient structural formation and association of parts, whereby a convenient and substantial attachment of the holder to a book is attained, and by means of which the leaves of the book, when in an open condition, are held in a fiat position under ordinary conditions as well as the normal tendency of a book to return to a closed condition after having been opened.

To provide a folding construction of the resilient holding fingers of the attachment, adapted for adjustment to different sizes of books and to different portions of the open leaves thereof. 7

To provide a folding prop of a telescopic nature for the base member of a book holding attachment, adapted to support the open book in an inclined position for convenient examination and study, and in which the prop i held in its folded condition close to the rear face of said base member in a secure yet readily detachable manner, all as will hereinafter more fully appear.

In the accompanying drawing 2- Fig. 1, is a front elevation illustrating the holding attachment applied to an. open book.

Fig. 2, is an enlarged sectional elevation of line 2-2 Fig. 1.

Fig. 3, is a front elevation of the holding attachment.

Fig. 4, is a central transverse section on line 4- 1 Fig. 3.

Fig. 5, is a fragmentary rear elevation of the hinge connection of the prop to the base member of the attachment.

Like reference numerals indicate like parts in the different views.

Referring to the drawing, 1 designates the base of the attachment, of resilient plate metal or the like, which in the const-ruction shown is slitted. to provide a central spring blade or clip 2, which when the holder is applied to a book cover, presses against one face of said cover with the base 1 resting against the opposite face of the cover. In addition said base is slitted to provide a pair of cars 3 which. when bent into angular relation to the base constitute pivot ears for the spring member of the leaf holding fingers hereinafter described.

4 designate transverse pivot knuckles formed by bends in the low-er end portion of the base 1, for pivotal connection of the folding prop or foot hereinafter described, and said knuckles are in turn formed with lateral notches 5 for holding engagement with the stem of the prop or foot.

6 designates a transverse circular fold in the upper end portion of the base 1 forming a spring catch for the free end of the prop or foot above referred to, when the same is in a folded position.

"7 designates a pair of resilient holding fingers which in the preferred construction shown is formed of wire, and integrally with each other and with a central coil or spiral 8, which is adapted to be arranged between the pivotears 3 aforesaid and held in place by a pintle plate or strip 9 to constitute a simple and eflicient resilient connection of the pair of arms 7 to the base 1 of the attachment.

1O designate auxiliary prongs or fingers, preferably formed of wire, pivotally connected to the respective free ends of the holding fingers 7 by pivot studs or eyelets 11 so as to be capable of independent adjustment to rest upon a desired portion of a "book leaf which is to be held in open condition.

12 designates a prop or foot, formed in sections adapted to telescope together and held to adjustment by frictional contact one with the other.

13 designates a cross pin at the end of one foot section having pivotal engagement in the pivot knuckle 4 aforesaid, with the adjacent shank portion of said section adapted to engage in a lateral notch 5 of a knuckle 4 to hold the prop or foot 12 in an unfolded and book supporting position.

14 designates a central toe or extension on the free end of the foot section of the prop Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent, is

1. In a book holding attachment, a base plate provided with pivot ears and with a SJl'lDD blade ada )ted for en a ement with l o l. s s

a book, cover, said pivot ears and spring blade being integrally formed from the base plate and in aligned relation to each other and a pair of holding fingers formed inte rally with each other and with a central spiral 't'orn'iing a resilient connection for said fingers and having engagement with said pivot ears by means oi a bar passing through the spiral and attached'to the respective pivot ears, said fingers extending in opposite directions to engage opposite leaves of an open book.

2. In a book holding attachment, a base plate provided with pivot ears and with a springblade adapted for engagement with a book cover, said pivot ears and spring blade being integrally formed from the base plate and in aligned relation to each other, and a pair of holding fingers formed integrally with each other and with'a central spiral forming a resilient connection for said fingers and having engagement with said pivot ears by means of a bar passing through the spiral and attached to the respective pivot ears, said fingers extending in opposite directions to engage opposite leaves of an open book, said fingers having auxiliary prongs pivotally connected to the free ends of said fingers in a direction to and from the central supporting spiral.

3. In a book holding attachment, a base plate provided with pivot ears and with a spring blade adapted for engagement. With a book cover a pair of holding fingers having resilient connection with said pivot ears and extending in opposite directions, and a sectional telescoping prop hinged at one end to the lower portion of the base plate with its free end adapted to engage the upper portion of the base plate in a folded position of the prop, the lease plate having means for holding the prop in its unfolded position.

4;. In a book holding attachment, a base plate provided with pivot ears and with a spring blade adapted for engagement with a book cover, a pair oif holding fingers having resilient connection with said. pivot ears and extending in opposite directions, and a sectional telescoping prop' h'inged at one end to the lower portion of the base plate with its free end adapted toengage the upper portion of the base plate in a folded position of the prop, the base plate having means for holding theprop inpits unfolded position,- the same comprising a pivot knuckle on the base plate having a lateral notch, and a cross pin on an-end oi the prop having sliding and pivotal engagement in said knuckle and detachable engagement of the shank portion of the prop in said lateral notch I l -Witness our hands this 10th day of December, A. D. 1921. Y

ALBERT L. RADLEIN. CARL G. NELSON. 

